America's highest court, which has the final power to decide cases involving the interpretation of the U.S. Constitution, certain legal areas set forth in the Constitution (called federal questions) and federal laws. It can also make final decisions in certain lawsuits between parties in different states. The U.S. Supreme Court has nine justices -- one of whom is the Chief Justice -- who are appointed for life by the President and must be confirmed by the U.S. Senate. Most states also have a supreme court, which is the final arbiter of the state's constitution and state laws. However, in several states -- most notably New York and Maryland, where it's called the "Court of Appeals," and Massachusetts, where it's called the "Supreme Judicial Court" -- the highest state court uses a different name.